US8821468B2 - Absorbent disposable incontinence diaper having side portions - Google Patents

Absorbent disposable incontinence diaper having side portions Download PDF

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Publication number
US8821468B2
US8821468B2 US13/257,984 US201013257984A US8821468B2 US 8821468 B2 US8821468 B2 US 8821468B2 US 201013257984 A US201013257984 A US 201013257984A US 8821468 B2 US8821468 B2 US 8821468B2
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Prior art keywords
side portions
rear side
region
diaper
main part
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US13/257,984
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US20120016329A1 (en
Inventor
Enno Gause
Ruediger Kesselmeier
Krzysztof D. Malowaniec
Maximilian Swerev
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Paul Hartmann AG
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Paul Hartmann AG
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Priority claimed from DE102009059886A external-priority patent/DE102009059886A1/de
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Assigned to PAUL HARTMANN AG reassignment PAUL HARTMANN AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MALOWANIEC, KRZYSZTOF D., SWEREV, MAXIMILIAN, KESSELMEIER, RUEDIGER, GAUSE, ENNO
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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15756—Applying tabs, strips, tapes, loops; Knotting the ends of pads
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/49014—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the side panels
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/56—Supporting or fastening means
    • A61F13/5622—Supporting or fastening means specially adapted for diapers or the like
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/56—Supporting or fastening means
    • A61F13/5605—Supporting or fastening means specially adapted for sanitary napkins or the like
    • A61F13/5616—Supporting or fastening means specially adapted for sanitary napkins or the like using flaps, e.g. adhesive, for attachment to the undergarment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/56—Supporting or fastening means
    • A61F13/5622—Supporting or fastening means specially adapted for diapers or the like
    • A61F13/5633—Supporting or fastening means specially adapted for diapers or the like open type diaper
    • A61F13/5638—Supporting or fastening means specially adapted for diapers or the like open type diaper adjustable open type diapers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/56—Supporting or fastening means
    • A61F13/5622—Supporting or fastening means specially adapted for diapers or the like
    • A61F13/565—Supporting or fastening means specially adapted for diapers or the like pants type diaper
    • A61F13/5655—Supporting or fastening means specially adapted for diapers or the like pants type diaper adjustable pants type diapers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0448—With subsequent handling [i.e., of product]
    • Y10T83/0467—By separating products from each other

Definitions

  • the invention relates to an absorbent incontinence article of the open type, having a main part, consisting of a front region, a rear region and a crotch region that is located in between in the longitudinal direction and comes to lie between the legs of a user, wherein the main part comprises an absorbent pad, and having separate side portions that are attached to the rear region and/or to the front region on both sides, are provided with closure means, extend in the transverse direction beyond lateral longitudinal edges of the main part and connect the front region and the rear region together in the put-on state of the article.
  • Incontinence articles of this kind are known and described, for example, in WO 2005/102241 A1.
  • the side portions which are sometimes also referred to as ears, are preferably attached directly to the main part, the chassis of the sanitary article, in a cut and place method.
  • This manufacturing technology makes it possible to manufacture the side portions from a different raw material than the central main part of the sanitary article.
  • the side portions can be configured in an air-permeable manner, whereas the central main part can be formed in a substantially moisture-impermeable manner.
  • the most efficient and simplest, and also most cost-effective, shape of the side portions from a manufacturing point of view is the rectangular shape. This allows the materials forming the side portions to be transported during production in the form of an endless web of flat material from which the side portions are then severed transversely to the machine direction. There are virtually no offcuts in this case.
  • a further proposal known from the prior art is to provide the side portions with a reinforcement means which, as seen in the transverse direction, is formed in a narrower manner than each side portion and which is provided at least in a region bridging the longitudinal side edge of the main part, that is to say overlays both a lateral longitudinal edge region of the main part and also a part of the side portion in the transverse direction (DE102006050971A1).
  • the present invention is based on the object of solving the problem outlined above in a more effective manner, that is to say to create absorbent incontinence articles having at the front and the rear in each case two laterally joined and attached side portions, in the case of which the tearing behavior of the rear side portions is significantly improved.
  • this object is achieved according to the invention in that, in order to form a side-portion leg-opening region, the rear side portions are formed, at least on the side facing the crotch region, in a manner extending obliquely with respect to the longitudinal direction or in a curved manner, while the transverse edge, facing the crotch region, of the front side portions extends substantially parallel to the transverse direction, the front side portions thus having particularly a rectangular contour.
  • R, Fm and C are determined as described further below.
  • the contouring of the rear side portions results in a significant increase in the side-portion tear strength, since in the case of the contoured shape, the side edge of the main part is less suitable for forming a kind of tear-off edge for the side portions.
  • the tensile force that is introduced into the side portion via the closure means close to the leg opening when the diaper is put on is distributed over a relatively large surface area, and so the resultant force that acts on the critical point is considerably reduced.
  • the critical point is understood to be the point at which the lower edge of the side portion meets the rear side edge of the main part.
  • the tear propagation resistance of the material forming the side portions of only at least 4.0 N combined with the contouring according to the invention of the rear side portions allows the closure means to be positioned very close to, that is to say at most 5 cm from, the lower edge of the rear side portions.
  • the invention solves this hitherto unknown conflict of objectives by the combination of features specified in the independent claim.
  • the present invention moreover allows a high degree of flexibility in the choice of materials for the rear side portions, since as a result materials having a high wearing comfort but low tensile strength can also be used.
  • the main part likewise has contouring in the crotch region.
  • the side-portion leg-opening regions formed in a manner extending obliquely to the longitudinal direction or in a curved manner are formed by a continuously or quasi-continuously guided severing process, particularly by cutting or punching, and so a continuous edge is formed.
  • the path of the severing process in this case takes in the rear side portion and preferably also the main part.
  • the contoured leg-opening regions are thus formed exclusively by cutting or separating edges of the single, continuous or quasi-continuous severing process, thereby of course also implying that the disposable incontinence diaper can be produced in an economic manner and undesired edges are avoided.
  • the coherent offcut formed by the rear side portion and if appropriate by the main part has to be removed from the process.
  • This is carried out in an advantageous manner by the method described in DE102008056220, with, in contrast to the method described in DE102008056220, the cut not being guided through the front side portions but merely through the rear side portions and preferably the main part.
  • the greatest longitudinal extent l 1 of the region severed from the rear side portion is 20-180 mm, particularly 30-100 mm.
  • the extent l 3 , in the longitudinal direction of the disposable incontinence diaper, of the region of the offcut severed from the main part is preferably from 110 to 500 mm, particularly from 200 to 450 mm; by contrast, the greatest transverse extent l 4 of this region severed from the main part is rather small and is preferably from 5 to 100, particularly from 8 to 70 and more particularly from 10 to 60 mm.
  • the extent l 5 of the offcut in said transverse direction is particularly from 150 to 350 mm, and more particularly from 190 to 300 mm.
  • the spacing C of the closure means from the lower edge, facing the crotch, of the rear side portions is at most 4.0 cm, preferably at most 3.5 cm, particularly preferably at most 3 cm and very particularly at least 0.5 cm.
  • the basis weight of the material forming the rear side portions should preferably be 14-40 g/m 2 , particularly 16-30 g/m 2 , and very particularly 17-28 g/m 2 .
  • the tear propagation resistance of the material forming the rear side portions is preferably at least 5.0 N, particularly preferably at least 6.0 N and very particularly preferably at least 6.5 N, but preferably at most 10.0 N.
  • the tear propagation resistance of the material forming the rear side portions is preferably at least 5.5 N, particularly preferably at least 6.0 N, very particularly preferably at least 6.5 N and particularly at least 7.0 N, but preferably at most 12 N.
  • the tear propagation resistance of the material forming the rear side portions is preferably at least 5.5 N, particularly preferably at least 6.0 N, very particularly preferably at least 6.5 N and particularly at least 7.0 N, but preferably at most 12 N.
  • the front side portions with a basis weight as described above for the rear side portions.
  • the front side portions furthermore also have a tear propagation resistance Fm and/or Fm.sp and/or Fsp as described for the rear side portions.
  • an inner edge and outer edge of the front and/or rear side portions run parallel to one another. More preferably, the inner and/or outer edges run at least in portions parallel to a longitudinal direction of the disposable incontinence diaper. Preferably, the inner edge of the rear side portions has a greater extent D in the longitudinal direction than the outer edge.
  • nonwoven material which contain at least one formulation component based on a thermoplastic polymer are suitable.
  • the nonwovens may contain fibers of PE, PP, PET, rayon, cellulose, PA and mixtures of these fibers. Bicomponent and multicomponent fibers are also conceivable and advantageous.
  • front and/or rear side portions from a nonwoven-film laminate.
  • the film component would come to lie on the outside and the nonwoven component on the inside in order to ensure that a soft surface faces the body.
  • first elastic elements having a component in the longitudinal direction are attached to the main part.
  • These elastic elements can extend exactly in the longitudinal direction, that is to say in a straight line, or, particularly advantageously, also be provided such that they follow a certain contouring along the leg openings. In such a case, the elastic elements take a curved path along the leg opening.
  • the elastic elements do not extend into the side portions, but are limited to a positioning within the main part.
  • second elastic elements made to extend in the first longitudinal direction, in particular in the form of what are known as upright cuff elements, which are known per se, for example including from EP0263720A1, may be attached to the web of the main part of the diaper.
  • These preferably upright second elastic elements flank to a certain extent a center of the main part of the diaper or absorbent pad; they may be provided in the region of the edges of the absorbent pad, within the edges of the absorbent pad or outside the edges of the absorbent pad. They form a lateral run-out guard for the disposable incontinence diaper.
  • the closure means in order to secure the disposable incontinence diaper as intended on the body of a person, can be secured in a detachable manner at least in regions both to the outer side of the main part and also to the outer side of the front side portions, with the retaining forces between the closure means and the outer side of the front side portions preferably being greater than the retaining forces between the closure means and the outer side of the main part.
  • the retaining forces determined as over-the-stomach retaining forces between the closure means, which have in particular mechanical closure aids, and the outer side of the main part are preferably 20-57 N/25 mm, particularly 25-50 N/25 mm.
  • the over-the-stomach retaining forces between the closure means and the outer side of the side parts in the front region are preferably 58-90 N/25 mm, particularly 60-80 N/25 mm. Furthermore, it has been found to be advantageous for the over-the-stomach retaining forces between the closure means and the outer side of the rear side portions to be lower than the over-the-stomach retaining forces between the closure means and the outer side of the front side portions. This, too, makes the user in most cases secure the closure means to the front side portions. In the context of the present invention, the over-the-stomach retaining forces were determined by the test method described in WO2008049546A1.
  • the outer side of the main part of the disposable incontinence diaper is preferably formed by a nonwoven material, at least in regions, but particularly over the entire surface area. This gives the disposable incontinence diaper a “textile-like” impression.
  • the film layer of this nonwoven-film laminate is then preferably formed from a one- or multi-layer liquid-impermeable, but preferably nevertheless breathable, film, with the breathability of the front and/or the rear side portions preferably being greater than the breathability of the nonwoven-film laminate forming the back sheet of the disposable incontinence diaper.
  • the absorbent pad of the main part comprises preferably fiber materials, particularly cellulose fibers, more particularly natural cellulose fibers such as wood pulp fluff.
  • the absorbent pad contains superabsorbent materials (SAP), particularly in particle or fiber form, that is to say materials which can absorb a multiple of, preferably at least 20 times, particularly at least 30 times, their own weight of aqueous liquids, in particular of 0.9% NaCl solution, measured in accordance with EDANA ERT 440.2-02.
  • SAP superabsorbent materials
  • the rear side portions differ from the front side portions with regard to at least one, particularly at least two, more particularly at least three, and more particularly at least four, of their primary properties selected from the group comprising type of material, basis weight, breathability, density, stretchability, closure force, surface extent, thickness, and color.
  • express reference is made to the disclosure content of WO2009/015746.
  • the length of the front and/or rear side portions that is to say their maximum extent in the longitudinal direction of the diaper, to be at least 10 cm, particularly at least 15 cm, more particularly at least 18 cm, more particularly at least 22 cm and more particularly at most 45 cm.
  • the overall length of the disposable incontinence diaper is 50-120 cm, particularly 60-110 cm and more particularly 70-110 cm.
  • the width of the front and/or rear side portions that is to say the maximum extent of the side portions beyond the side edge of the main part of the diaper, to be 10-40 cm, particularly 12-30 cm, more particularly 13-25 cm.
  • the front side portions are the same width as the rear side portions.
  • the invention also relates to a method for producing a disposable incontinence diaper, wherein, in order to contour the leg-opening regions on both sides of the disposable incontinence diaper, a respective continuously or quasi-continuously guided severing process taking in the rear side portion, which is already provided with closure means, and the main part is executed on each side, so that a coherent offcut which has to be removed is formed from the rear side portion and the main part, and as a result of which the spacing C of the closure means from the lower edge of the rear side portions is produced.
  • the offcut is gripped and removed by a transfer roller having pin-like, nub-like, hook-like or barb-like mechanical elements that protrude from its surface.
  • a negative-pressure assistance means at the transfer roller is furthermore made of a negative-pressure assistance means at the transfer roller.
  • the method according to the invention is furthermore advantageously developed in that the extent l 5 of the offcut (cf. FIG. 6 ) in the transverse direction is 150 mm-350 mm, particularly 190 mm-300 mm.
  • the extent l 3 in the longitudinal direction of the region of the offcut severed from the main part is from 110 to 500 mm, particularly from 200 to 450 mm.
  • the transverse extent l 4 of the region of the offcut severed from the main part is from 5 to 100 mm, particularly from 8 to 70 mm, more particularly from 10 to 60 mm.
  • the greatest longitudinal extent l 1 of the region severed from the rear side portion is from 20 to 180 mm, particularly from 30 to 100 mm.
  • FIG. 1 shows a schematic illustration of a plan view of an incontinence article having side portions attached on both sides;
  • FIGS. 2 a and 2 b each show an enlarged partial view of the disposable incontinence diaper according to FIG. 1 ;
  • FIG. 3 shows by way of example a further side-portion geometry according to the invention
  • FIG. 4 shows a representation of determined tear propagation resistances in the form of a graph
  • FIG. 5 shows a perspective view of the web guidance over a transfer roller having protruding mechanical elements for removing the offcut
  • FIG. 6 shows an illustration of a severed offcut
  • FIGS. 7 and 8 show an illustration of the testing of the side-portion tear strength.
  • FIG. 1 schematically shows a plan view, not to scale, of the inner side, that is to say the side facing the body, of a disposable absorbent incontinence diaper 2 in the just-unfolded state.
  • the disposable incontinence diaper 2 comprises a main part 4 having a front region 6 , a rear region 8 and a crotch region 10 located in between in the longitudinal direction.
  • an absorbent pad 12 which is usually arranged between chassis-forming materials of the main part 4 , that is to say particularly between a liquid-permeable top sheet 11 , which is formed from a nonwoven material, and a substantially liquid-impermeable back sheet 13 , which is formed from a film material, of the main part 4 .
  • the back sheet 13 can also be formed from a liquid-impermeable nonwoven material or from a nonwoven-film laminate, with the nonwoven layer then coming to lie on the outside and the film layer on the inside directed toward the absorbent pad. This gives the disposable incontinence diaper 2 a “textile-like” impression.
  • first elastic elements 80 are attached to the main part 4 , between the top sheet 11 and the back sheet 13 .
  • the elastic elements 80 extend substantially in the longitudinal direction, that is to say with a substantial component in the longitudinal direction, in which case they take a curved path along the leg-opening region portion to be assigned to the crotch region 10 .
  • the disposable incontinence diaper 2 furthermore comprises front side portions 22 and rear side portions 20 , which are attached to the main part 4 as separate nonwoven components on both sides.
  • the side portions 20 , 22 are connected in a nondetachable manner in an overlapping region 18 , which is illustrated in a hatched manner, to chassis-forming materials of the main part 4 , that is to say, for example, to the back sheet 13 and/or the top sheet 11 .
  • the side portions 20 extend beyond the front and rear lateral longitudinal edges 42 , 41 of the main part in the transverse direction 30 .
  • the front and rear lateral longitudinal edges 42 , 41 of the main part are understood in the context of the present invention to mean those longitudinal edge regions of the main part to which the side portions are attached and beyond which said side portions extend.
  • the longitudinal extent of the front and rear side edges 42 , 41 of the main part thus also define the longitudinal extent of the front region 6 and of the rear region 8 of the disposable incontinence diaper 2 .
  • the side portions 20 , 22 are conceived of and intended for being connected to one another in the put-on state of the disposable incontinence diaper 2 , in order to form a hip region of the sanitary article that is continuous in the circumferential direction.
  • the side portions 20 , 22 provided on one side of the main part 4 are in each case connected together.
  • mechanical closure means 32 close to the leg opening and closure means 33 remote from the leg opening particularly having mechanical closure aids such as burr hooks, are provided on the rear side portions 20 and can be secured in a detachable manner to the outer side of the front and rear side portions 20 , 22 .
  • the closure means can also be secured in a detachable manner to the outer side of the main part.
  • Both the front side portions 22 and the rear side portions 20 are formed from a nonwoven material, in the illustrated case from a PP spunbonded nonwoven, Pegatex S, manufacturer: Pegas a.s., Primetická 86, 66904 Znojmo, C Z.
  • the basis weight of the nonwoven material of the front side portions is 30 g/m 2 .
  • the fiber thickness of the fibers forming the nonwoven material is 2 dtex.
  • the over-the-stomach retaining forces between the closure means 32 and the outer side of the front side portions 22 are preferably at least 58 N/25 mm.
  • the basis weight of the nonwoven material of the rear side portions 20 in the illustrated case is 27 g/m 2 .
  • the tear propagation resistance of the nonwoven material of the rear side portions, measured in the longitudinal direction 28 is:
  • over-the-stomach retaining forces between the closure means 32 , 33 and the outer side of the rear side portions 20 are lower than the over-the-stomach retaining forces between the closure means 32 , 33 and the outer side of the front side portions 22 .
  • the rear side portions 20 have a larger surface extent than the front side portions 22 .
  • the front and rear side portions thus differ in at least three of their primary properties, namely the basis weight, the closure force and the surface extent.
  • the difference in closure force between the front and rear side portions makes the user secure the closure means 32 , 33 preferably to the front side portions 22 , this being beneficial to the fit of the diaper.
  • the leg-opening regions 50 are formed by rear side portions 20 , which are formed in a curved manner toward the crotch region and form the rear side-portion leg-opening regions 51 , by the hourglass-shaped contouring of the main part 4 having the main-part leg-opening region 53 and by the transverse edge 55 , which faces the crotch region and extends parallel to the transverse direction 30 , of the front side portions 22 having front side-portion leg-opening regions 52 .
  • An hourglass-shaped contouring of the main part 4 is understood here to mean any shape of the narrowing in the main part 4 in the crotch region 10 , that is to say any curved, and also any non-curved or not exclusively curved shape, in which case the crotch region 10 of the main part 4 has a shorter extent in the transverse direction 30 than the front region 6 and/or the rear region 8 of the main part.
  • the contouring of the rear side portions 20 and of the main part 4 is formed in the present case by in each case a single cut, that is to say one on each side, said cut taking in both the rear side portions 20 and the main part 4 and in the process being guided continuously through side-edge and main-part material to be separated.
  • the leg opening 50 thus comprises a rear contoured side-portion leg-opening region 51 , a front side-portion leg-opening region 52 that has been left uncontoured and a contoured main-part leg-opening region 53 ( FIG. 2 a ).
  • FIG. 2 b illustrates once more the rear side portion 20 having the spacings A, B and C that are necessary for determining the parameters according to the invention: the rear side portion 20 is bounded by an inner edge 60 , which corresponds to the rear side edge 41 of the main part, by an outer edge 61 , and by an upper edge 63 and a lower edge 64 , which forms the contour of the rear side-portion leg-opening region.
  • the upper edge 63 and the lower edge 64 connect the inner edge 60 to the outer edge 61 .
  • the inner edge 60 and the outer edge 61 preferably extend parallel to one another, more preferably, the inner edge 60 and/or outer edge 61 extend at least in portions parallel to a longitudinal direction 28 of the disposable incontinence diaper.
  • the inner edge 60 preferably has a greater extent D in the longitudinal direction 28 than the outer edge 61 .
  • spacing A is defined as the greatest extent of the lower edge 64 in the longitudinal direction 28 .
  • Spacing B is defined as the greatest extent of the rear side portion in the transverse direction 30 , that is to say the greatest distance between the inner edge 60 and the outer edge 61 in the transverse direction, and therefore the width of the side portion.
  • Spacing C is defined as the shortest distance, to be determined in the longitudinal direction 28 , between a closure means 32 close to the leg opening and the lower edge 64 .
  • FIG. 3 shows an alternative side-portion geometry according to the invention, in which the greatest extent A of the lower edge 64 is to be measured in the longitudinal direction 28 between the outer edge 61 and the inner edge 60 , since the contour of the lower edge 64 is at a true maximum.
  • A is 55 mm
  • B is 225 mm
  • R is thus 0.24.
  • the length D of the inner edge 50 is 350 mm.
  • the tear strength of the rear side portions is 64.5 N.
  • the side-portion tear strength of a comparison diaper which was manufactured from identical materials and had an identical maximum side-portion length and width, but was equipped with side portions having a rectangular contour (as is illustrated schematically in WO2005102241), was determined. Only the basis weight of the PP spunbonded nonwoven (manufacturer: Pegas a.s.) of the rear side portions was, at 30 g/m 2 , slightly, i.e. around 3 g/m 2 , heavier than that of the side portions of the above-described diaper according to the invention. The side-portion tear strength of this comparison diaper was only 38.8 N. This shows that even slight contouring, expressed by a low R value, has a clearly positive effect on the side-portion tear strength.
  • the tear propagation resistances are determined as tear propagation strength by the test method specified in DIN EN ISO 13937-2.
  • the sample length is 150 mm.
  • the central incision has a depth of 50 mm.
  • the speed of deformation is set to 200 mm/min.
  • the evaluation takes place by means of an electronic device.
  • a peak value to be evaluated is characterized by an increase or drop in force of at least 0.2 N.
  • upper and lower force peaks are taken into account when the Fm.sp is being determined.
  • the maximum value of all the upper force peaks of each specimen Fsp and the average force Fm calculated over the entire force characteristic curve to be evaluated are also determined.
  • FIG. 4 shows a representation in the form of a graph of determined tear propagation resistances of spunbonded nonwoven materials forming side portions, said materials only differing from one another with regard to the basis weight.
  • the side-portion tear strengths of disposable incontinence diapers according to the invention that are produced therefrom decrease as the tear propagation resistance of the side-portion materials drops.
  • the tested 16 g/m 2 spunbonded nonwoven having a tear propagation resistance of Fm 4.98 in combination with the contouring according to the invention of the side portions also meets the tear strength requirements of the side portions in use of the diaper, even though the closure means are fastened by the manufacturer less than 5 cm away from the lower edge of the side portions.
  • FIG. 5 schematically shows a detail from the method according to the invention for producing the disposable incontinence diaper.
  • the web is guided over a transfer roller 1000 for removing the offcut 62 , which roller is arranged downstream of the cutting rollers, not illustrated, at position 74 for contouring the leg-opening regions 50 on both sides and by means of which roller the coherent offcut 62 from the rear side portion and main part can be removed from the process.
  • the transfer roller 1000 has pin-like mechanical elements 1020 , which are arranged in a zoned manner, for gripping the offcut 62 .
  • the offcut can be removed by suction, in particular after being gripped by the transfer roller 1000 , by means of a suction device 1010 which is only indicated.
  • FIG. 6 shows schematically and not to scale the extent l 5 of the offcut 62 in the transverse direction of preferably 150 mm-350 mm, particularly 190 mm-300 mm.
  • the extent l 3 of the region 62 c of the offcut severed from the main part is from 110 to 500 mm, particularly from 200 to 450 mm, in the longitudinal direction.
  • the transverse extent l 4 of the region 62 c of the offcut severed from the main part is from 5 to 100 mm, particularly from 8 to 70 mm, more particularly from 10 to 60 mm.
  • the greatest longitudinal extent l 1 of the region 62 a severed from the rear and/or front side portion is from 20 to 180 mm, particularly from 30 to 100 mm.
  • the present invention has thus been successful in providing for the first time a disposable incontinence diaper having front and rear side portions attached to the main part, said disposable incontinence diaper having sufficient side-portion tear strength in use of the diaper and also taking sufficient account of the comfort of putting on and wearing the disposable incontinence diaper.
  • a disposable incontinence diaper is separated (cut or punched) 60 cm below the rear side portion, with the main part being damaged in the transverse direction.
  • the specimen containing the lower side portion is clamped into the tensile testing instrument (see FIGS. 7 and 8 ).
  • the specimen is in the process laid with its inner side resting against and over a curved surface 100 (radius of curvature 19 cm), intended to simulate the rounding of the back region of a user, and is clamped into the apparatus of the tensile testing instrument (see FIGS. 7 and 8 ).
  • the testing of a right-hand rear side portion is illustrated.
  • the product is intended to be clamped into the apparatus such that the specimen is fixed by the stationary clamp 101 over the entire length of the specimen at a spacing (transverse direction) of 60 mm from the inner edge of the side portion 20 .
  • the movable clamp 102 is fixed at the lower end of the outer edge of the side portion 20 over a length of 60 mm and a width of 30 mm.
  • the curved surface 100 is tilted forward (inclined) so that the side portion can rest against the curved surface during the subsequent tensile test (see FIG. 8 ).
  • a tensile test is carried out by controlled movements of the movable clamp 102 in the direction of the arrow 104 .
  • the test speed at which the movable clamp 102 is moved mechanically away from the main part of the incontinence product is 1800 mm/min.
  • an initial force of 0.2 N (Newton) is applied.
  • the method ends as soon as the side portion tears over a length of at least 5 cm.
  • the maximum forces in [N] measured in each tensile test are averaged.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Vascular Medicine (AREA)
  • Epidemiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Manufacturing & Machinery (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
US13/257,984 2009-03-26 2010-03-24 Absorbent disposable incontinence diaper having side portions Active 2031-04-02 US8821468B2 (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
DE102009015041.2 2009-03-26
DE200910015041 DE102009015041A1 (de) 2009-03-26 2009-03-26 Absorbierende Inkontinenzwegwerfwindel mit Seitenabschnitten
DE102009015041 2009-03-26
DE102009059886 2009-12-21
DE102009059886A DE102009059886A1 (de) 2009-03-26 2009-12-21 Absorbierende Inkontinenzwegwerfwindel mit Seitenabschnitten
DE102009059886.3 2009-12-21
PCT/EP2010/001820 WO2010108661A1 (de) 2009-03-26 2010-03-24 Absorbierende inkontinenzwegwerfwindel mit seitenabschnitten

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DE (1) DE102009015041A1 (de)
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EP2992865B1 (de) 2014-09-05 2019-11-06 Drylock Technologies N.V. Absorbierender Artikel mit asymmetrischen Seitenwänden
WO2016043264A1 (ja) * 2014-09-17 2016-03-24 株式会社日本触媒 乳酸を含む蒸気組成物の製造方法
EP3812495A1 (de) 2019-10-21 2021-04-28 Paul Hartmann AG Saugfähiger artikel mit erfassungskomponente
EP3811917A1 (de) 2019-10-21 2021-04-28 Paul Hartmann AG Absorbierender artikel mit weicher erfassungskomponente

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US20120016329A1 (en) 2012-01-19
US9050214B2 (en) 2015-06-09
JP2012521230A (ja) 2012-09-13
EP2410964B2 (de) 2020-03-18
AU2010227812A1 (en) 2011-09-29
RU2531885C2 (ru) 2014-10-27
DE102009015041A1 (de) 2010-09-30
CN102365069A (zh) 2012-02-29
AU2010227811A1 (en) 2011-09-08
CN102365069B (zh) 2014-11-05
PL2410964T5 (pl) 2021-08-30
ES2424637T3 (es) 2013-10-07
PL2410964T3 (pl) 2013-09-30
RU2011140422A (ru) 2013-05-10
WO2010108660A1 (de) 2010-09-30
CN102395341B (zh) 2014-11-12
ES2417337T5 (es) 2020-11-05
RU2536551C2 (ru) 2014-12-27
PL2410965T3 (pl) 2013-08-30
EP2410964A1 (de) 2012-02-01
ES2424637T5 (es) 2020-11-24
EP2410965B1 (de) 2013-05-01
US20120035569A1 (en) 2012-02-09
EP2410965A1 (de) 2012-02-01
CN102395341A (zh) 2012-03-28
PL2410965T5 (pl) 2021-02-08
WO2010108661A1 (de) 2010-09-30
JP5665842B2 (ja) 2015-02-04
EP2410964B1 (de) 2013-05-15
ES2417337T3 (es) 2013-08-07
EP2410965B2 (de) 2020-03-18
AU2010227812B2 (en) 2014-02-13
RU2011140423A (ru) 2013-05-10
JP5665841B2 (ja) 2015-02-04
AU2010227811B2 (en) 2014-03-27

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